1230213022021 has 2 divisors, whose sum is σ = 1230213022022. Its totient is φ = 1230213022020.

The previous prime is 1230213021997. The next prime is 1230213022033. The reversal of 1230213022021 is 1202203120321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1182632325121 + 47580696900 = 1087489^2 + 218130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230213022021 - 2¹⁵ = 1230212989253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1230213022021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230213022091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615106511010 + 615106511011.

It is an arithmetic number, because the mean of its divisors is an integer number (615106511011).

Almost surely, 2^{1230213022021} is an apocalyptic number.

It is an amenable number.

1230213022021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230213022021 is an equidigital number, since it uses as much as digits as its factorization.

1230213022021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1230213022021 its reverse (1202203120321), we get a palindrome (2432416142342).

The spelling of 1230213022021 in words is "one trillion, two hundred thirty billion, two hundred thirteen million, twenty-two thousand, twenty-one".